Let's say that 2" squate path was a piece of material you wanted to machine, like a 2" square coaster. Would I program the path to be 2" square and then use G42 for the bottom and right hand cuts and then G43 for the upper and left hand cuts? Would that yield a 2" square of material?
I have a reason for asking this relating to my next project....
No. Assuming your traveling around the part CCW, the offset will always be to the right, so G42. G41 is Left, btw. G40 turns off the comp. G43 is length compensation.